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compressor noise?

jayjay on Tue August 12, 2008 12:05 PM User is offlineView users profile

Year: 1999
Make: cherokee
Model: jeep
Engine Size: 4.0l
Country of Origin: United Kingdom

Hi all, im new to the site and was after some advice.
First of all i better point out that i have difficulty wiring a plug, (that is how stooopid i am!), so please bear this in mind with any responses you may have!!

I took my jeep in for a service last week at the jeep main dealers. I also had an a/c service as it wasnt working. On collecting my car and for the first 2 times i used the a/c, it worked great. Then within a week or so i established on my way home that it had stopped blowing out icey cold. On getting home i noticed that my car was making a rattling sound from the front of the car.
On looking further it appeared to be coming from the a/c compressor. Its like an inconsistant rattle pretty much the best way to describe it. It rattles at idle with the a/c on or off and at different settings. The a/c fan comes on whenever i turn the a/c on, and goes off when i turn it off, but no cold air. Ive looked through the window in the condenser and i cant see any bubbles. The belt feels tight and its not like a squeeling sound. Sorry thats all the details i have at the moment but please feel free to ask and i will check, so long as it isnt too complicated!!
Its only got 27 000 miles on the clock and this is genuine (registered disabled former keeper).

Now im assuming at this stage that there is no way IM gonna be able to fix this.
What i would like to know however is, is there any way that someone as stoopid as me when it comes to mechanics could gain enough knowledge from you guys to check a few REAL BASIC things out, to help pin down whats happened? even who knows, possible solutions!!?

What questions (if there are any) could i ask of the dealership to ensure they done a proper job in the first place? (i know that apparently it went through an electronic machine to have it done!?)

And lastly, what do you think are the possible problems/solutions here (complicated or otherwise), just so i have an idea on whats happend. The car goes back into the dealers on saturday and im of the firm belief that when it comes to main dealers, the less you know, the higher the cost!!!!

Ultimatley there is no way that i can afford a big bill on this one, and i dont wanna get suckered in from the main dealers. If i know what the problem is, the chances are ill order the parts and get a local mechanic to fix it.

your help would be very much appreciated,

HECAT on Tue August 12, 2008 5:06 PM User is offline

You had a leaking system charged and it has all leaked out again. The dealer knew this when they charge it (it had to go somewhere). Did the dealer say they had put any dye in it to determine where the leak was? Did they say they looked for a leak but could not find it? Did they tell you this may happen and to bring it back if it does? If not, and based upon your comments; I would say you need to find someone else to help you with your A/C, someone you can trust.

There are a lot of related and not related issues that can cause the rattle and there are some known components that can be causing a leak in that particular model. Lets start by trying to determine what part of the UK you live, and if any of our UK members are nearby or can recommend a shop you could feel more happy dealing with.


HECAT: You support the Forum when you consider for your a/c parts.


jayjay on Wed August 13, 2008 3:40 AM User is offlineView users profile

No, the dealer didnt say anything other than it had been done. It definatley wasnt making that sound when it was at the dealers.
When it stopped working i called them and they said that the a/c service gets done on a machine so nothing could have been left out or not done right. Couldnt it have been, that subsequently the rattle occurs after its been in the garage causing the a/c to leak?
im in south east london, kent borders.
many thanks

HECAT on Wed August 13, 2008 10:45 AM User is offline

There is a lot going on here.

It is perfectly correct to question, but it is also known by technicians that customers will assume all immediate problems occurring after a vehicle has been serviced is the technicians fault. It is impossible to know if the rattle is something that existed, something related to their work, or something completely unrelated. This may have been a case where you asked for a system charge and that is what you got. Further diagnostics may have been offered but not understanding the offer and fear of being ripped off, it may have been declined.

If it was me, I would return and request they look and determine why their work failed so rapidly, as we would with any other service purchased. There is a leak that needs to be found and corrected for the refrigerant charge to stay in there. Just charging it again (even at no charge) would not satisfy me as it will just fail again. Be prepared that the leak repair is going to be an additional charge for parts and labor (even if they agree to recharge again at no charge).

I am not up on my UK geography, you can contact a UK board poster/member at the following web site. Maybe they can direct you to an alternative shop if needed.


HECAT: You support the Forum when you consider for your a/c parts.


jayjay on Wed August 13, 2008 9:27 PM User is offlineView users profile

thanks for your 2 different answers.

Unfortunatley, my own personal experience with garages and mechanics in the past is sadly not a very good one at all. It must be the case that there are some hard working, honest, knowledgable guys out there working on cars all the time working with the utmost integrity. Sadly the ONLY time i had a garage admit they made a mistake was a couple of years ago across a court room, after i employed an independant engineer to inspect some work after a catastrophic service. I know too that you are right regarding customers always pointing fingers immediatley after etc, because whenever i have politley questioned some questionable work, the customer has never been right, so i assume they are all pretty clued up on it.

The best thing of course would be for me to work on my own cars and learn, i understand that and i have tried, but like it says at the top. Im stoooopid. I have however found a brilliant fitter but by his own admission is not a mechanic nor does he diagnose.

With regard to the charge, it was an a/c service that i had, whereby the whole system was/should have been checked. (oil change, dye, etc) This was by prior agreement. Not just a charge.
From your second answer i can see there is a grey area now that means it may not have been anything that the garage were, or could have been aware of, even if they did do everything right. This is fine by me. i just didnt want to get blatantly ripped off (which, from your second answer it appears im not). As far as im aware they are looking at it for free on saturday, to see whats happened. Then i guess ill just hear what they have to say.
many thanks

HECAT on Thu August 14, 2008 10:56 AM User is offline

I think giving the dealer the opportunity to look at the failure, given their most recent service; is the right thing to do. At 27000 miles, this one has done a lot of sitting; and this is never good for a vehicle. If they did put dye in it and it failed as quickly as it appears it did, they should be able to pin point the leak. Maybe it will turn out to just be a simple o-ring leak, we can only hope.

I think by yours and your fitters admission, this may just be too much for you to try and take hold of and resolve. A/C service requires a considerable understanding of system operation and component identification to be able to diagnose; not to mention the investment in some basic required tools.

It is understood that such past experiences, that required legal action; can make you even more sensitive to the issue of paying for incompetent or fraudulent services than others. But we all are skeptical in some way or another and I believe it is a good thing if we can direct it and use it wisely to our advantage, rather than letting it just become a phobia. Regardless of this issue today, I think you need to be dealing with someone you can trust. They are out there, look for the guy who does all the family and friends in the neighborhood, or does a lot of the same employees at work. Get some references from the people that use him and go shake his hand, and tell him that this group of people have recommended him and let him earn his way with you from there. Chances are he has built such a following from word of mouth and he will not be the cheapest guy in town. This is the kind of guy who has built his business on his reputation and just wants to get paid a fair wage to help you keep your car running properly. Sometimes he can be the bearer of bad news, but don't shoot the messenger.


HECAT: You support the Forum when you consider for your a/c parts.


jayjay on Thu August 14, 2008 8:14 PM User is offlineView users profile

Hecat, i think your spot on.
But as far as im concerned, if there is any grey area AT ALL, the dealer/mechanic/technician, must always get the benefit of the doubt considering my lack of knowledge. This is why i can only establish the facts as best i can. Many thanks for your help.

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